chellieu



No Moden) Wl H' CHELLIEUI 2 sheetsspem.

SAW SIET.

N0. 579,220. Patented Mar. 23, 1897.

WITNESSES m. A2M.

2 Sheets-Sheet 2.

h. aw, m l @QMMVNWIE (No Model.) WI' H GHELLIEU.

SAW SET.

Patented Mar. 23,1897.

Mig/w WITNESSES 4 llnirnn @rares IVILLIAM H. OHELLIEU, OF DETROIT,MICHIGAN, ASSIGNOR OF ON F-HALF TO FRANK H. SOHULER, OF SAME PLACE.

SAW-SET.

SPECIFICATION forming part of Letters Patent No. 579,220, dated March23, 1897. Application filed Tune 4,1896. Serial No. 594,242. (No model.)

To @ZZ whom t may concern.-

Be it known that I, WILLIAM H. CHELLIEU, a citizen of the United States,residing at Detroit, county of Wayne, State of Michigan, have invented acertain new and useful Improvement in Saw-Sets and I declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it pertains tomake and use the same, reference being had to the accompanying drawings,which form a part of this specification.

My invention relates to an improvement in saw-setting machines.

Referrin gto the drawings, Figure l is a plan View showing tight andloose pulleys when used as a power-machine and in dotted lines crankmechanism for operating the machine by hand. Fig. 2 is a longitudinalvertical section on line with the saw-guides, showing more particularlythe mechanism for feeding the saw to the setting-hammers. Fig. 3 is across-sectional View showing the mechanism to limit the set of thesaw-teeth.

In the drawings, A is the frame of the machine.

B B are striking-jaws pivoted at l) and provided with cam-shaped arms B.

D is the power-shaft, on which are mounted the tight and loose pulleys Dand D2. Also mounted on the shaft D are the disks E, provided withsuitable tripping-lugs e for the purpose of engaging the cam-shaped armsB. Mounted on the striking-jaws B B are suitable striking-hammers F.These hammers are made adjustable for different sizes of sawteeth bybeing mounted on a screw-shaft f,

.the bearings of which are in the striking-jaws.

These screw-shafts are arranged so that by turning the same thestriking-hammers may be moved nearer to or farther apart, as the casemay require.

G G are saw-guides secured to the frame of the machine, and His anadjustable guide for holding the saw rmly against the bed-plate of themachine. rlhis device is used more particularly when itis desired to setbandsaws or saws of like character. This adjustable guide is mountedupon a removable spring-arm 7L, one end of which is inserted in one ofthe saw-guides, or it may be engaged in the frame of the machine. Whenit is desired to set hand-saws or saws of like character, this guide maybe removed.

B2 B2 are springs, one end of which are engaged in suit-able pinsmounted upon the frame of the machine. The other ends are `caused tobear upon the striking-jaws B B. To limit the set given to the saw-teethby the setting-hammers, I provide the screw-shafts I I, which aremounted in the striking-jaws B B. By adjusting these screw-shafts inrelation with each other any desired pitch may be given to thesaw-teeth, for it will be readily seen that the screw-shafts may be soadjusted with relation to each other that when they come in contact itwill determine the set given to the teeth of the saws.

J is a traveling carriage in which is mounted a suitable weighted dog j,adapted to engage the teeth of asaw. On the shaft D is mounted a cam K.On the face of said cam are secured one or more adjustable lugs Tt. Itis seenpthat when the cam is caused to rotate and the lug Z: comes incontact with the cam-shaped portion of the traveling carriage J (the dogmounted in said carriage having entered one of the teeth of the saw) thecarriage will be forced forward by the rotation of the said cam K,carrying the saw with it a sufficient distance to present another set ofteeth between the setting-hammers. The lug 7c is made adjustable, so asto adapt the travel of the carriage .I to the requirements of the saw tobe set. Vhen the carriage has. reached the end of its stroke, it isreturned to its initialv position by the spring J The operation of mydevice is as follows: The saw to be set is placed between the guides G,andif the saw is what is known as a band-- saw the adjustablespringguide H is arranged to force the saw into close contact With thebed of the machine. Power is now applied to the shaft D, and the disks EE are thereby caused to rotate. The tripping-lugs coming in contact withthe cam-shaped arms of the striking-jaws will force the jaws apart untilthey ride over the end of the cam, when the springs will force the jawstogether, and the hammers coming in contact with the saw will set theteeth. At the proper moment the cam K for operating the carriageJ willforce the saw forward, bringing the successive teeth into position to beset.

IOO

Having thus described my invention, what I claim isl. In a saw-settingmachine the combination of strikingjaws, adjustable hammers mountedthereon and arranged to set the successive teeth of a saw, means foroperating said jaws, and means for limiting the set of the saw-teeth,said means consisting of two adjustable shafts mounted on thestrikingjaws and arranged diametrioally opposite each other whereby theends of said adjustable shafts will abut and limit the set of thesaw-teeth when the strikingjaws are operated, substantially asdescribed.

2. In a saw-setting machine the combination of striking-jaws providedwith adjustable hammers, cam mechanism for spreading said striking-jawsapart, suitable springs VILLIAM II. CI-IELLIEU.

lVitnesses:

S. E. THOMAS, F. H. SCHULER.

